Below are some quick screenshots that I took on my phone. I connected to one of my demo environments that has the Update 2 environment and I was able to see the one mobile app workspace I designed a few weeks ago, which I described in the post below.

Obviously this was just a very crude attempt at creating a prototype mobile app to evaluate the new feature in Dynamics 365 and it worked great.

I could not connect it to the Update 3 environment, which is really the Dynamics 365 For Operations environment, as it is still being configured.I will work on creating a more usable and professional app/workspace in Dynamics 365 For Operations, and I will share more details once I have something ready. If you connect to an Update 3 environment, you will notice that there will already be several out of the workspaces/apps that are developed and published my Microsoft out of the box.